I would recommend ReadReader for accessing Reddit. It is a FOSS app that for some reason still works fine even over orbot (tor). Never had an account on Reddit only used it to lurk through these types of apps.

There likely would be some demand, but the premise in that case is to bypass 10000$ threshold of cash that you can avoid declaring. I do not think airports would be interested in facilitating that, and even if they do install the machines would be heavily KYCd with your ID and all, which kind of defeats that purpose, because you can bring over 10k cash no problem, but you have to declare it.